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astro-ph.CO2023★ 11 cited
Cosmological effects of the Galileon term in Scalar-Tensor Theories
A. G. Ferrari, M. Ballardini, F. Finelli +2
We study the cosmological effects of a Galileon term in scalar-tensor theories of gravity. The subset of scalar-tensor theories considered are characterized by a non-minimal coupli…
astro-ph.CO2023★ 28 cited
Phantom scalar-tensor models and cosmological tensions
M. Ballardini, A. G. Ferrari, F. Finelli
We study three different extended scalar-tensor theories of gravity by also allowing a negative sign for the kinetic term for the scalar field in the Jordan frame. Our scope is to…